Tests: <HTMLElement>.getDescendants()

List descendant elements

Usage: <HTMLElement>.getDescendants(callback <Function> = undefined)

Mixed list:

• First Child
• Second Child
• Third Child
• Fourth Child
  • First Grandchild
• Fifth Child
• Sixt Child
  • Second Grandchild
• Seventh Child
• Eight Child
  • Third Grandchild
  • Fourth Grandchild
• Ninth Child